The biggest space of time between two seasons airing is between Season 2 and Season 3. Season 2 first aired back in 1986, and Season 3 in 1992.

In the Ukrainian version, Michael Angelis and George Carlin's voices can be heard in the background, as a dubbing track wasn't used. The first thirteen episodes have George Carlin's voice while the last thirteen episodes have Michael Angelis' voice. Angelis is also credited as narrator in the first 13 Season 3 episodes despite Carlin's narration in the background and the episode being redubbed.

For much of the season, Tidmouth Sheds appears to be much larger on the inside than usual. While all the exterior scenes depict the shed with the usual six berths, there are nine tracks seen in most interior views.

This is the only season that has George Carlin's narration on VHS in New Zealand. However when the Season 3 episodes were aired in New Zealand, Michael Angelis' narration was used instead. This is also the case when The Complete Third Series was released on DVD in New Zealand.

Model maker John Holmes did not receive credit for working on this season until 1992.

At the very end of Michael Angelis' early narrations, the credits were shown with a still of the final shot of each episode. When shown on TV and in future video and DVD releases, the credits were shown alongside a still of Thomas.

This was the last season to be shown on ITV until 2002 when Season 6 was shown.

This season as produced in association with Fuji Television Network, Inc., as indicated by a message at the end of each episode. In 1991 airings, the message is in white, while in 1992 airings, it is yellow.

According to The Thomas the Tank Engine Man, it cost £1.3 million to produce all 26 episodes.